PT-LX270U, PT-LX270E, PT-LX270EA, PT-LX300U, PT-LX300E, PT-LX300EA (serv.man2) - Panasonic Projector Service Manual (repair manual). Page 4

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PT-LX270 / PT-LX300 series
IV
Contents
Safety Instructions .............................................. II
Safety precautions ............................................ III
Contents ............................................................IV
Comparison List .................................................V
Chapter 1
Introduction ...................................................... 1-1
1-1 Specifications ............................................ 1-1
1-2 Compatible Signals ................................... 1-3
Chapter 2
Disassembly Process ...................................... 2-1
2-1  Equipment Needed & Product Overview ... 2-1
2-2  Disassemble Lamp Cover Module ............ 2-2
2-3  Disassemble Lamp Module ....................... 2-2
2-4  Disassemble Top Cover Module ............... 2-3
2-5  Disassemble Keypad Board ......................2-4
2-6  Disassemble Zoom Ring ...........................2-4
2-7  Disassemble Top Shielding .......................2-5
2-8  Disassemble Main Board Module ............. 2-5
2-9  Disassemble Main Board Shielding .......... 2-7
2-10   Disassemble Front Cover Module and IR 
Sensor Board .......................................2-8
2-11  Disassemble System Fan ........................2-8
2-12  Disassemble Thermal Switch .................. 2-9
2-13  Disassemble Blower Fan ......................... 2-9
2-14  Disassemble Engine Module ................. 2-10
2-15 Disassemble Color Wheel Module .........2-11
2-16  Disassemble DMD Chip  and DMD 
Board ...................................................2-11
2-17  Disassemble Focus Ring ....................... 2-12
2-18  Disassemble LVPS Module ................... 2-12
2-19 Disassemble Lamp Driver and Interlock
Switch ................................................. 2-13
2-20 Disassemble Speaker ........................... 2-15
2-21  Disassemble Bottom Shielding ............. 2-15
2-22  Disassemble Bottom Cover Module ...... 2-16
2-23  Disassemble IO Cover Module ............. 2-16
2-24 Rod Adjustment ..................................... 2-17
2-25 Repair Action ......................................... 2-18
Chapter 3
Trobleshooting ................................................. 3-1
3-1 LED Lighting Message .............................. 3-1
3-2 Main Procedure .........................................3-2
3-3 NO Power troubleshooting ........................3-3
3-4 Power troubleshooting ..............................3-4
3-5 Image troubleshooting ..............................3-5
3-6 Remote control troubleshooting ................3-9
3-7 Electronic Function Block Diagram ......... 3-10
3-8 Pin Assignment ....................................... 3-11
3-9 Service menu explanation ...................... 3-13
Chapter 4
Function Test & Alignment Procedure ........... 4-1
4-1 Run In Test  ............................................... 4-1
4-2 Test Inspection Procedure ........................4-2
4-3 Calibration .................................................4-3
4-4 Waveform download .................................4-4
4-5 Fan calibration ..........................................4-5
Chapter 5
Firmware Upgrade ............................................5-1
5-1 Scaler Firmware Upgrade ......................... 5-1
5-2: MCU Firmware Upgrade Procedure ........ 5-7
Chapter 6
Parts list ....................................................... SPL-1
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